"readUnits"(this, units=NULL, ..., verbose=FALSE)NULL, all units are read.getCellIndices() of the
AffymetrixCdfFile class (if cdf was not specified),
but also to the readUnits() method of the
AffymetrixCelSet class.list structure that readUnits() of
AffymetrixCelSet returns.
MultiArrayUnitModel.